Chemistry Diagnostic Test Information

The Chemistry Diagnostic Test is unavailable at this time due to changes in Chemistry 1A course name and prerequisites. Please read the following information:

Starting Fall 2020, the first semester of general chemistry is being split into separate courses. Formerly known as CHEM 1A: General Chemistry, the course will be split into CHEM 3A (lecture) and CHEM 3AL (lab), however concurrent enrollment is required for both on the first attempt. The pre-requisite for the new CHEM 3A reads:

“Course Completion or Concurrent Enrollment in CHEM 3AL; AND Course Completion of CHEM 42, or one year of high school chemistry taken within the last five years with a grade of B or higher; AND Course Completion of MATH 154 or MATH 155 or MATH 156 or higher (MATH) or appropriate placement based on AB705 mandates.”

If you wish to take CHEM3A/3AL in the fall semester or beyond, but do not meet the prerequisites, you can submit a Prerequisite / Corequisite Challenge form online through the Admissions and Records website. This process does not guarantee that you will be approved to enroll in CHEM 3A/3AL.

Click here to access the Prerequisite Challenge form.

If you have questions, please contact our Testing and Support Services office by email at or call:

Santa Rosa Campus: (707) 527-4305
Petaluma Campus: (707) 778-3908